North Korea says a plan that could see it fire four missiles near the US territory of Guam will be ready in a matter of days.State media said Hwasong-12 rockets would pass over Japan and land in the sea about 30km (17 miles) from Guam, if the plan was approved by Kim Jong-un.It denounced Donald Trump's warnings of "fire and fury" and said the US leader was "bereft of reason".The US has warned the North its actions could mean the "end of its regime".US Defence Secretary Jim Mattis said Pyongyang would be "grossly overmatched" in any war against the US and its allies.The BBC's Rupert Wingfield-Hayes, who is in Guam, says there is a sense that the North Korean threat is rhetorical, as most people feel that if they really did strike with missiles it would be suicidal for the North Korean regime.

According to a new poll (taken before Trump's 'Fire and Fury' threat) 75% of Americans believe that North Korea's nuclear program is a 'critical threat' to the U.S. This made Jimmy wonder how many Americans even know where North Korea is so we went out to Hollywood Boulevard to find out.

On Tuesday in response to President Trump’s threat, Kim Jong Un responded by issuing a direct threat to Guam, the U.S. island territory in the Pacific Ocean that is about 2, 100 miles from North Korea – and well within the range of the missile capabilities North Korea has shown so far.

After Kim Jong Un's regime threatened to strike near or in the vicinity of Guam earlier this week, North Korea released a more specific plan to launch four ballistic missiles at the island — which is home to more than 160, 000 Americans.» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC» Watch more NBC video: http://bit.ly/MoreNBCNews

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North Korea announced it's examining plans to fire ballistic missiles to siege Guam... if Washington builds up its hostility.A reaction to strategic bombers deployed on the pacific island flown over the Korean Peninsula earlier this week.Kwon Jang-ho has our top story. North Korea has vented its anger to the recent deployment of U.S. strategic bombers over the Korean peninsula.In an announcement on its state media, a spokesperson for the North Korean military said it was, quote, "carefully examining the operational plan to envelope fire in the areas around Guam" with it's intermediate-range missile, the Hwasong-12. This was said to be in order to contain activity of the U.S. military bases on the island, including the bombers, and that the operation would be ready to go at any moment under the order of the regime's leader Kim Jong-un.South Korea's defense officials said the phrasing of the statement suggests that Pyongang would put the island under siege, rather than target the island itself.

Guam, located in the Western Pacific, is some 34-hundred kilometers from North Korea, and within striking distance of the Hwasong-12 missile, which Pyongyang claims to have successfully tested in May this year. The island is home to two U.S. military bases, and its assets are often used in joint military exercises with South Korea. Seoul confirmed that two B-1-B bombers from the Anderson Air Force Base DID fly over the peninsula in a combined-exercise with South Korean jets on Tuesday, but no prior notice had been given.

Pyongyang's announcement came hours after U.S. President Trump's threat of "fire and fury" against the regime, but it is not thought to be a response to those comments, with typically more time needed for the regime to formulate one for its state media outlets.

Although North Korea's rhetoric raises concerns of escalation, experts say it changes little of the situation on the peninsula.

"In light of the recent new UN sanctions on North Korea, the regime's threat today can be considered a relatively stronger one than before. However, Pyongyang wouldn't act on it. If they did, it would likely lead to war, but North Korea then would not have the backing of its allies, China and Russia."

"The South Korean government has meanwhile described Pyongyang's threats as 'unhelpful' towards bettering relations and said it will work closely with the U.S. to keep an eye on any movement in North Korea.Kwon Jang-ho, Arirang News."